Home / Area 408 / Prefix 400
Prefix Lookup

(408) 400 Phone Number Lookup

Research phone numbers under this exchange in Sunnyvale, California. Review carrier details, activity signals, and community caller feedback.

236number listings
0caller reports
14lookup pages

Phone Numbers in This Prefix

Browse numbers in this exchange and open any listing to view caller details, spam signals, and community feedback. Showing 1–18 of 236 listings for this prefix.

Frequently searched Landline

(408) 400-3900

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
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Frequently searched Landline

(408) 400-3920

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-3940

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-3960

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-3980

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-4000

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-4020

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-4040

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-4060

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-4080

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-4100

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-4120

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-4140

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-4160

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-4180

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-4200

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-4220

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing
Frequently searched Landline

(408) 400-4240

Sunnyvale, California

  • Carrier: Pacific Bell
  • Exchange: 408-400
  • Report type: Reverse lookup profile
View listing

About this prefix

Area code 408 prefix 400 is organized as a reverse lookup section for Sunnyvale, California. The page combines location metadata, carrier information, line type, number listings, and community activity in one place.

Public URLs use the exchange format 408-400, while each listing still maps back to the correct area code and prefix structure.